On Friday, Ranbaxy Laboratories voluntarily recalled a few batches of generic Lipitor from the US market. But the Gurgaon-based company is not the only Indian drugmaker to voluntarily recall drugs from the US market this year. An enforcement report brought out by the US Food and Drugs Administration (FDA) on November 14 shows Hyderabad-based Aurobindo Pharma voluntarily recalled a batch of Zolpidem drug from the US market in March this year. According to the US FDA enforcement report, the Zolpidem batch was recalled because of “adulterated presence of foreign tablets”. The FDA enforcement report said, “This product is being recalled because 30 valacyclovir hydrochloride tablets USP 500 mg were discovered in a bottle labelled Zolpidem Tartrate tablets USP 10 mg.”